[PATCH 17 of 17] obsolescence: add test for the "branch replacement" logic during push, case D6

[Sean Farley]

Pierre-Yves David <pierre-yves.david at ens-lyon.org> writes:

> # HG changeset patch
> # User Pierre-Yves David <pierre-yves.david at ens-lyon.org>
> # Date 1492093695 -7200
> #      Thu Apr 13 16:28:15 2017 +0200
> # Node ID d106f22c0f397303727ce045698076a3dc4474ba
> # Parent  6020bb1b76c86bf0b42b174c3348f98e5909e0b2
> # EXP-Topic push.checkheads
> # Available At https://www.mercurial-scm.org/repo/users/marmoute/mercurial/
> #              hg pull https://www.mercurial-scm.org/repo/users/marmoute/mercurial/ -r d106f22c0f39
> obsolescence: add test for the "branch replacement" logic during push, case D6
>
> Mercurial checks for the introduction of new heads on push. Evolution comes
> into play to detect if existing branches on the server are being replaced by
> some of the new one we push.
>
> The current code for this logic is very basic (eg: issue4354) and was poorly
> tested. We have a better implementation coming in the evolve extension fixing
> these issues and with more serious tests coverage. In the process of upstreaming
> this improved logic, we start with adding the test case that are already passing
> with the current implementation. Once they are all in, we'll upstream the better
> implementation and the extra test cases.
>
> See inline documentation for details about the test case added in this
> changeset.

Sure, seems fine to me again.
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